ALPHA SMP1320-011, SMP1320-017, SMP1320-074, SMP1320-075, SMP1320-079 Datasheet

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com 1

Specifications subject to change without notice. 1/01A

Low Resistance Low Capacitance
Plastic Packaged PIN Diodes

Features

■ Designed for High Performance Wireless
Switch Applications

■ 0.9 Ω Resistance, 0.3 pF Capacitance

■ Multiple Package Configurations

■ Available in Tape and Reel Packaging

Description

The SMP1320 series of plastic packaged, surface
mountable PIN diodes are designed for high v olume switch
applications from 10 MHz to beyond 2 GHz. The low
current performance of these diodes (0.9 Ω maximum at
10 mA and 2 Ω typical at 1 mA) make the SMP1320 series
particularly suited to batter y operated circuits. Available
in a selection of plastic packages and in a variety of
configurations including a low inductance (0.4 nH)
SOT-23 (SMP1320-007), the small footprint SC-79 and the
miniature SC-70.

SMP1320 Series

Parameter Condition Typ. Max. Unit

Reverse Current (IR)V

R

= 50 V 10 µA
Capacitance (CT) F = 1 MHz, V = 30 V 0.30 pF
Resistance (RS) F = 100 MHz, I = 1 mA 2.0 Ω
Resistance (RS) F = 100 MHz, I = 10 mA 0.9 Ω
Forward Voltage (VF) IF = 10 mA 0.85 V
Carrier Lifetime (TI) IF = 10 mA 0.4 µS
I Region Width 8 µm

Electrical Specifications at 25°C

Characteristic Value

Reverse Voltage (VR) 50 V
Power Dissipation @ 25°C Lead 250 mW

Temperature (PD)
Storage Temperature (TST) -65°C to +150°C
Operating Temperature (TOP) -65°C to +150°C
ESD Human Body Model Class 1B

Absolute Maximum Ratings

Single Common Series Pair Low Single Ultra Low Single

Cathode Inductance Inductance

Marking: PL1 Marking: PL3 Marking: PL2 Marking: PLB Marking: PLC

SOT-23 SOT-23 SOT-23 SOT-23 SOD-323 SOT-143 SC-79

♦ SMP1320-001 ♦ SMP1320-004 ♦ SMP1320-005 ♦ SMP1320-007 ♦ SMP1320-011 ♦ SMP1320-017 ♦ SMP1320-079

LS= 1.5 nH LS= 1.5 nH LS= 1.5 nH LS= 0.4 nH LS= 1.5 nH LS= 0.2 nH LS= 0.7 nH

SC-70 SC-70 SC-70

♦ SMP1320-074 ♦ SMP1320-075 ♦ SMP1320-077

LS= 1.4 nH LS= 1.4 nH LS= 0.4 nH

♦ Available through distribution.

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com

Specifications subject to change without notice. 1/01A

Low Resistance Low Capacitance Plastic Packaged PIN Diodes SMP1320 Series

Series Resistance vs. Current @ 100 MHz

0.1

0.01 0.1 1 10 100

1

10

100

Forward Current (mA)

Series Resistance (Ω)

Capacitance vs. Reverse Voltage

Reverse Voltage (V)

Capacitance (pF)

0

0.1

0.2

0.3

0.4

0.5

0 1 2 5 10 20 50

1 MHz–1 GHz

400 500 600 700 800 900 1000

DC Characteristic

0.01

0.1

1

10

100

Forward Voltage (mV)

Forward Current (mA)

0 500 1000 1500 2000

Conductance vs. Frequency

and Reverse Voltage

0

100

200

300

400

500

600

Frequency (MHz)

Conductance (µS)

0 V

10 V

40 V

Typical Performance Data

R

S

R

S

R

S

R

S

R

S

I

F

-55°C -15°C +25°C +65°C +100°C

(mA) (ΩΩ)(

ΩΩ

)(

ΩΩ

)(

ΩΩ

)(

ΩΩ

)

0.02 29.60 29.20 30.80 32.00 32.70

0.10 7.20 7.70 8.30 8.80 8.80

0.30 3.40 3.60 3.80 4.00 4.10

0.50 2.50 2.70 2.80 2.90 3.00

1.00 1.70 1.80 1.90 2.00 1.90

10.00 0.84 0.85 0.76 0.76 0.67

20.00 0.73 0.73 0.64 0.64 0.56

100.00 0.59 0.57 0.47 0.48 0.40

Resistance vs. Temperature @ 500 MHz SMP1320-007

In the -007 configuration of the SOT-23 package, the package
inductance is effectively reduced to 0.4 nH, in comparison
to the 1.5 nH value of the standard configuration.This lower
inductance will be particularly beneficial when the diodes are
used as shunt connected switches at frequencies higher than
500 MHz, where inductance is the primary limitation on
maximum switch isolation.

To achieve the effective 0.4 nH, the SOT-23 package
must be inserted in the microstrip circuit board with a gap
in the trace, as shown in the
figure. Because of the
polarity of the diode junction,
this low inductance feature is
only realizable with the
cathode connected to
ground.

Gap

Ground